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- From 8e7daa85641c9559c113f6b217bdc923397de77c Mon Sep 17 00:00:00 2001
- From: William Zhang <[email protected]>
- Date: Thu, 22 Feb 2024 19:47:58 -0800
- Subject: [PATCH] mtd: rawnand: brcmnand: Support write protection setting from
- dts
- The write protection feature is controlled by the module parameter wp_on
- with default set to enabled. But not all the board use this feature
- especially in BCMBCA broadband board. And module parameter is not
- sufficient as different board can have different option. Add a device
- tree property and allow this feature to be configured through the board
- dts on per board basis.
- Signed-off-by: William Zhang <[email protected]>
- Reviewed-by: Florian Fainelli <[email protected]>
- Reviewed-by: Kamal Dasu <[email protected]>
- Reviewed-by: David Regan <[email protected]>
- Signed-off-by: Miquel Raynal <[email protected]>
- Link: https://lore.kernel.org/linux-mtd/[email protected]
- ---
- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 4 ++++
- 1 file changed, 4 insertions(+)
- --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
- +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
- @@ -3184,6 +3184,10 @@ int brcmnand_probe(struct platform_devic
- /* Disable XOR addressing */
- brcmnand_rmw_reg(ctrl, BRCMNAND_CS_XOR, 0xff, 0, 0);
-
- + /* Check if the board connects the WP pin */
- + if (of_property_read_bool(dn, "brcm,wp-not-connected"))
- + wp_on = 0;
- +
- if (ctrl->features & BRCMNAND_HAS_WP) {
- /* Permanently disable write protection */
- if (wp_on == 2)
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